package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.json.JacksonObjectMapper;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Value("${sky.shop.address}")
    private String shopAdress;
    @Value("${sky.baidu.ak}")
    private String ak;

    @Autowired
    private WebSocketServer webSocketServer;

    /**
     * 用户下单
     *
     * @param ordersSubmitDTO
     * @return
     */
    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //异常情况的处理（收货地址为空、超出配送范围、购物车为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        String UserAddress = addressBook.getProvinceName() + addressBook.getCityName() + addressBook.getDistrictName() + addressBook.getDetail();
        checkOutOfRangs(UserAddress);
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);

        //查询当前用户的购物车数据
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //构造订单数据
        Orders order = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, order);
        order.setPhone(addressBook.getPhone());
        order.setAddress(addressBook.getDetail());
        order.setConsignee(addressBook.getConsignee());
        order.setNumber(String.valueOf(System.currentTimeMillis()));
        order.setUserId(userId);
        order.setStatus(Orders.PENDING_PAYMENT);
        order.setPayStatus(Orders.UN_PAID);
        order.setOrderTime(LocalDateTime.now());


        //向订单表插入1条数据
        orderMapper.insert(order);

        //订单明细数据
        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(order.getId());
            orderDetailList.add(orderDetail);
        }

        //向明细表插入n条数据
        orderDetailMapper.insertBatch(orderDetailList);

        //清理购物车中的数据
        shoppingCartMapper.deleteByUserId(userId);

        //封装返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(order.getId())
                .orderNumber(order.getNumber())
                .orderAmount(order.getAmount())
                .orderTime(order.getOrderTime())
                .build();

        return orderSubmitVO;
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();

        // 根据订单号查询当前用户的订单
        Orders ordersDB = orderMapper.getByNumberAndUserId(outTradeNo, userId);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
        ///////////////////////////////////////////////
        Map map = new HashMap();
        map.put("type", 1);//消息类型，1表示来单提醒
        map.put("orderId", orders.getId());
        map.put("content", "订单号：" + outTradeNo);
        //通过websocket实现来单提醒，向客户端浏览器推送消息
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }

    /**
     * 用户端订单分页查询
     *
     * @param pageNum
     * @param pageSize
     * @param status
     * @return
     */
    public PageResult pageQuery4User(int pageNum, int pageSize, Integer status) {
        // 设置分页
        PageHelper.startPage(pageNum, pageSize);
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);

        // 分页条件查询
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        List<OrderVO> list = new ArrayList();

        // 查询出订单明细，并封装入OrderVO进行响应
        if (page != null && page.getTotal() > 0) {
            for (Orders orders : page) {
                Long orderId = orders.getId();// 订单id
                // 查询订单明细
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetails);

                list.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(), list);
    }

    /**
     * 订单详情页面
     *
     * @param id
     * @return
     */
    public OrderVO getById(Long id) {
        //根据id查询订单表（orders）
        OrderVO orderVO = orderMapper.getorderVOByOrderId(id);
        //根据id查询菜品明细
        List<OrderDetail> list = orderDetailMapper.getListByOrderId(id);
        //OrderVo里面的set方法
        orderVO.setOrderDetailList(list);
        //返回
        return orderVO;
    }

    /**
     * 再来一单
     *
     * @param id
     */
    public void submitOrderagin(Long id) {
        //获取userId
        Long userId = BaseContext.getCurrentId();
//        OrderVO orderVO = orderMapper.getorderVOByOrderId(id);
        //根据id查询订单详细表  封装到集合里面
        List<OrderDetail> list = orderDetailMapper.getListByOrderId(id);
        //遍历集合
        for (OrderDetail orderDetail : list) {

            ShoppingCart cart = new ShoppingCart();
            //把遍历的数据拷贝到购物车里面
            BeanUtils.copyProperties(orderDetail, cart);
            //修改UserId 创建时间
            cart.setUserId(userId);
            cart.setCreateTime(LocalDateTime.now());
            //调用insert方法  添加到购物车里面
            shoppingCartMapper.insert(cart);
        }
    }

    /**
     * 订单查询分页
     *
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult adminPage(OrdersPageQueryDTO ordersPageQueryDTO) {
        //开始分页
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        //根据前端传的参数 查询订单表orders 封装到page里面
        Page<OrderVO> page = orderMapper.getpage(ordersPageQueryDTO);
        List<OrderVO> orderVOS = page.getResult();

        //先获取一次获取订单id然后进行查询
        if (orderVOS != null && orderVOS.size() != 0) {
            for (OrderVO orderVO : orderVOS) {
                //把订单对应的菜品拿到 封装到集合里面
                List<OrderDetail> orderDetails = orderDetailMapper.getListByOrderId(orderVO.getId());
                //先判断是否为空
                String str = "";
                if (orderDetails != null && orderDetails.size() != 0) {
                    //遍历orderDetails
                    for (OrderDetail orderDetail : orderDetails) {
                        //把查询的口味 给到orderVO
                        orderVO.setRemark(orderDetail.getDishFlavor());
                        //拼接
                        str += orderDetail.getName() + "*" + orderDetail.getNumber();
                    }
                    //把字符串放到orderVO里面
                    orderVO.setOrderDishes(str);
                }
            }
        }
        return new PageResult(page.getTotal(), orderVOS);
    }

    /**
     * 状态数量
     *
     * @return
     */
    @Override
    public OrderStatisticsVO statistics() {
        Integer confirmed = orderMapper.findOrderStatistics(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.findOrderStatistics(Orders.DELIVERY_IN_PROGRESS);
        Integer toBeConfirmed = orderMapper.findOrderStatistics(Orders.TO_BE_CONFIRMED);
        OrderStatisticsVO vo = OrderStatisticsVO.builder().confirmed(confirmed).deliveryInProgress(deliveryInProgress).toBeConfirmed(toBeConfirmed).build();
        return vo;
    }

    /**
     * 订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
     */
    /**
     * 商家接单
     *
     * @param ordersConfirmDTO
     */
    public void acceptOrder(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder().id(ordersConfirmDTO.getId()).status(Orders.CONFIRMED).build();
        orderMapper.update(orders);
    }

    /**
     * 拒绝接单
     *
     * @param ordersRejectionDTO
     */
    @Override
    public void rejectOrder(OrdersRejectionDTO ordersRejectionDTO) {
        Orders orders = orderMapper.getorderVOByOrderId(ordersRejectionDTO.getId());
        if (orders.getPayStatus() == Orders.PAID) {
            orders.setPayStatus(Orders.REFUND);
        }
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setStatus(Orders.CONFIRMED);
        orders.setCancelReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 取消订单
     *
     * @param ordersCancelDTO
     */
    public void cancelOrder(OrdersCancelDTO ordersCancelDTO) {
        Orders orders = orderMapper.getorderVOByOrderId(ordersCancelDTO.getId());
        if (orders.getPayStatus() == Orders.PAID) {
            orders.setPayStatus(Orders.REFUND);
        }
        if (orders.getPayStatus() != Orders.CANCELLED) {
            orders.setStatus(Orders.CANCELLED);
        }
        orderMapper.update(orders);
    }

    /**
     * 派送订单
     *
     * @param id
     */
    public void delivery(Long id) {
        Orders orders = Orders.builder()
                .id(id)
                .status(Orders.DELIVERY_IN_PROGRESS)
                .build();
        orderMapper.update(orders);
    }

    /**
     * 完成订单
     *
     * @param id
     */
    public void complete(Long id) {
        Orders orders = Orders.builder()
                .id(id)
                .status(Orders.COMPLETED)
                .build();
        orderMapper.update(orders);
    }

    /**
     * 取消订单
     *
     * @param id
     */
    public void userCancel(Long id) throws Exception {
        //根据id查询订单
        OrderVO orderVO = orderMapper.getorderVOByOrderId(id);
        //校验订单是否存在
        if (orderVO.getStatus() == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (orderVO.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(orders.getId());

        //订单处于接单状态下取消，需要进行退款
        /*if (orderVO.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            //调用微信退款
            weChatPayUtil.refund(
                    orderVO.getNumber(), //商户订单号
                    orderVO.getNumber(),//商户退款单号
                    new BigDecimal(0.01),//退款金额，单元 元
                    new BigDecimal(0.01));//原订单金额
                //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }*/
        //跟新订单状态、取消原因、取消时间
//        orders.setStatus(Orders.CANCELLED);order_detail
//        orders.setCancelReason("用户取消");
//        orders.setCancelTime(LocalDateTime.now());order_detail
        Orders orders1 = Orders.builder().id(orderVO.getId()).status(Orders.CANCELLED).cancelTime(LocalDateTime.now()).build();
        orderMapper.update(orders1);
    }

    /**
     * 检查用户是否超出了配送范围
     *
     * @param address
     */
    private void checkOutOfRangs(String address) {
        Map map = new HashMap();
        map.put("address", shopAdress);
        map.put("output", "json");
        map.put("ak", ak);

        //1.获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if (!jsonObject.getString("status").equals("0")) {
            throw new OrderBusinessException("地址解析失败");
        }
        //数据解析异常
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");

        Float lat = location.getObject("lat", Float.class);
        Float lng = location.getObject("lng", Float.class);
        //店铺坐标经纬度
        String shopLngLat = lat + "," + lng;
        map.put("address", address);

        //2.获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if (!jsonObject.getString("status").equals("0")) {
            throw new OrderBusinessException("收获地址解析失败");
        }
        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getObject("lat", Float.class);
        lng = location.getObject("lng", Float.class);
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin", shopLngLat);
        map.put("destination", userLngLat);
        map.put("steps_info", "0");

        //4.路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);
        jsonObject = JSON.parseObject(json);
        if (!jsonObject.getString("status").equals("0")) {
            throw new OrderBusinessException("配送路线规划失败");
        }
        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");
        log.info("用户距离：{}", distance);

        if (distance > 5000) {
            //配送距离5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }

    /**
     * 用户催单
     *
     * @param id
     */
    public void reminder(Long id) {
        Orders orders = orderMapper.getById(id);
        if (orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //基于WebSocket实现催单
        Map map = new HashMap();
        map.put("type", 2);//2代表用户催单
        map.put("orderId", orders.getId());
        map.put("content","订单号："+ orders.getNumber());
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }
}

